Direct-action thermostatic feed-water control



April 29; 1930. o. B. KIBELE 1,756,125

- DIRECT ACTION THERMOSTATIC FEED WATER CONTROL Filed Jan. 10, 1927 Jmvmrok. 07'2'0 15'.- [025425.

Patented Apr. 29, 1932 OTTO B. KIBELE, OF WILMINGTON, CALIFORNIA DIRECT-ACTION THERMOSTATIC FEED-WATER CONTROL Application filed January 10, 1927. Serial No. 160,218.

An object of my invention is to provide a thermostatic feed Water control in which the thermostatic element is directly coupled with the valve controlling the water flow tube to provide a more delicate and accurate control of the valve. 7

Another object is to provide a thermostatic feed water control which is simple in construction, inexpensive to manufacture and effective in operation.

A still further object is to provide a novel balanced valve controlling the water supply, which valve is so arranged that a positive seating is provided at all times and sand, dirt,

or the like will not act to keep the valve unseated.

Other objects, advantages, and features of inventionmay appear from the accompanying drawing, the subjoined detailed description, or the appended claims.

In the drawing- Fig. 1 is a side elevation of my feed water control mounted on a boiler.

Fig. 2 is a plan view of my control.

Fig. 3 is a fragmentary longitudinal sectional view of my control.

Fig. 4 is a side elevation of the valve.

Referring more particularly to the drawm The boiler 1 is provided with the usual steam dome 2 and my feed water control 3 is adapted to be mounted adjacent said boiler in any convenient and suitable position. My feed water control 3 comprises an end casting 4 and a valve casing 5 positioned at the other end of the control. A pair of rods 6, 7 extend parallel to each other and are secured to the end casting 4 and the valve casing 5 by means of ears '8, 8 on the casting 4 and ears 9, 9 on the casing 5.

A lower rod 10 is also secured to the casting 4 and easing 5; that is, to arms 11, 12 depending from said casting 4 and easing 5, respectively. A fitting 13 is provided with a pair of outwardly extending arms 14, 15 and the rods 6, 7 extend through the said arms thus slidably mounting the fitting 13 on the rods. A downwardly extending arm 16 is provided on the fitting 13 through which the rod 10 extends. Thus it will be seen that the fitting is accurately guided and mounted on the rods 6, 7 and 10.

A thermostatic tube 17 is secured in the casting 4 and fitting 13 and a steam pipe 18 extends into the fitting 13 leading from the steam dome 2. Thus it will be seen that steam is fed into one end of the tube 17. A pipe 19 extends from below the water level in the boiler 1 to the casting 4 thereby feeding water into the outer end of the tube 17, that is, water from the boiler is fed into one end of the tube 17 while steam from the steam dome is fed into the other end of the tube. Guides 20, 21 are secured to the rods 6, 7 and 10 and the tube 17 is slidable therethrough whereby said tube is accurately guided and is prevented from warping or buckling throughout its length.

The valve casing 5 is formed with an inner cage 22, said cage being spaced from the outer 79 wall of the casing to permit Water to circulate thereabout. A double-seated balanced valve 23 seats in the cage 22 in alinement with the tube 17 and a rod 24 extends from the rear of said valve and is threaded into the fitting 13, said rod extending through a packing gland 25 which prevents leakage around said rod. A look nut 26 on the rod 24 prevents the unloosening of said rod once it is adjusted. In order that the valve 23 may be accurately balanced, I provide a larger shaft 27 extending rearwardly therefrom. This latter shaft is of suiiiciently larger diameter than the rod 24 to equalize the difference in diameter of the two heads on the valve 23. It is, of course, apparent that one of the heads must be smaller than the other in order to insert the valve in the cage 22. The large shaft 27 extends through a nut 28 which screws into the rear of the casing 5 and a 99 packing gland 29 is provided therein to prevent leakage around the shaft 27.

The valve 23 is provided With spiral vanes 30 thereon and the'valve is rotatably mounted on the rod 24. The object of the vanes 30 is to rotate the valve as the Water passes thereby thus serving to clean ofi' any accumu lated sand, scale, or the like, and insuring an accurate seating of the valve at all times. A I feed Water supply pipe 31 extends into the 153 top of the casing and a boiler supply pipe 32 extends from the bottom of the" casing 5 to the boiler. The pipe 32 is open to the cage 22 while the pipe 31 is open to the casing 5. 5 Thus it will be seen that the flow of Water through the casing 5 is controlled by the action of the valve 23.' I 7 The end of the shaft 27 is squared, as I at 33, which enables a wrench to be placed 10 thereon and by loosening the lock nut 26 the valve 23 can be adjusted to properly seat when the thermostatictube 17 is contracted. It will be seen that I thus provide a very simple and rapidadjustment for the valve. In mounting my control I so arrange the thermostatic tube 17 that itis inclined'upwardly from the Cast ing 4 towards the casing 5. Thisinclination of the tube enables the water to readily drain therefrom as the level falls in the boiler. The steam then follows back of the water level which heats the tube causing itto expand and open the valve 23 permitting water to flow into the boiler. As the water flows into the boiler the level of the water. in the tube 25 17 is raised, causing saidtubeto cool and contract toagain close the valve 2'3. 7

Having described my invention I claim: 1. A direct action thermostatic feed water'- 7 control for boilers, comprising a thermostatic 3o tube adapted to bem'ounted at an angle, a

casting at the lower end of said tube, said a casting being connected to the water in the boiler, a fitting at the upper end of said tube, said fitting'beingconnected to the steam in the boiler, a-valve casing, rods extendingbetween and secured to said valve casing and said casting, said fitting being slidably mounted on said rods, a valve in said casing in direct alinement with said tube, a rod extending from said valve and threaded into said fitting, a shaft extending from said valve out of the valve casing whereby said valve may be adjusted on its seat;

A direct action thermostatic feed water control for boilers, comprising athermostatic tube adapted to be mounted at an angle, a casting at'the lower end of said tube, said casting being connected to the water in the boiler, a fitting at the upper end of said tube. said fitting being connected to the steam in the boiler, a valve casing,-.rods extending between and secured to said valve casing and said casting, said fitting being slidably mounted on said rods, a balanced valve in said casing rotatably mounted on a rod,,vanes on said valve whereby said valve is rotated, said rod being in direct alinement with said tube and being threaded into the fitting, a shaft extending from said valve out of the valve 69 casing whereby said valve may be adjusted longitudinally relative to said fitting. In testimony whereof, I affix my signature. OTTO B. KIBELE. 

